(Solved): Determine the developed torque and shaft torque of a DC motor of 220V, 4-pole series wound machine, ...

1. Determine the developed torque and shaft torque of a DC motor of 220V, 4-pole series wound machine, having 778 conductors which are lap-connected supplying a load of 9.5KW by taking a current of 48 A from the main supply. The flux per pole is given as 26mWb and the armature resistance is 0.7 ohm .(Draw also an illustration for series connected DC motor equivalent circuit)
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2) Utilize the characteristics given below, analyze the characteristics to develop the relationship between torque and armature current and then develop one practical application considering the relation. Torque 0 Ta Tsh 3) With the help of the equivalent circuit model of a separately excited DC generator, Develop an equation for the emf generated for the following a) Lap wound rotor b) Wave wound rotor. R A Field wdg -0000 + Load